| Author | Majumder, Prerona |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Microelectronics and Embedded Systems |
| Publisher | Asian Institute of Technology |
| Abstract | The purpose of this work was to explore and delineate optical properties such as refractive index (RI), absorbance and permittivity of nanocomposites by simulation using effective medium theories (EMT). There are a number of EMTs but only Maxwell-Garnett (MG) and Bruggeman (BG) formulae were applied in simulations. Dielectric constants were calculated with these formulae for the overall composite system consisting of a dielectric host material and a nanoparticle minority inclusion. In one study, a slab waveguide was designed with p-doped porous silicon coated with zinc oxide (ZnO) nanorods. The decrease in simulated refractive index correlated well with a decrease in experimental porosity of the silicon substrate. Design parameters were obtained for a single mode slab waveguide. Secondly, particle interaction was explored with derivation of new formulae to adequately describe optical behavior of the systems. Lastly, electromagnetic field coupling between nanoparticles of specified orientation was studied for gold nanoparticles in aluminum oxide host medium. Considering the lack of systematic and empirical research on this subject, a theoretical approach was adopted that includes qualitative study and simulation with data collection of individual optical constants from a reliable source. Three dimension calculations of particle interaction can be used for clustering. |
| Year | 2015 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Industrial Systems Engineering (DISE) |
| Academic Program/FoS | Microelectronics (ME) |
| Chairperson(s) | Mongkol Ekpanyapong; |
| Examination Committee(s) | Hornyak, G. L. ;Mohammed, Waleed S. ; |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship; |